Antifriction center bearing for cars.



\ MJ. G'. BARBER. ANTIFBIoTIoN CENTER 'BEARING PoR ons.

APPLICATIOI FILED JUH 11, 1906.

Patented oct.13,19o8`.

it: able others skilled in the art to which it ap "17', consists ot thenovel devices and combina- :1o characters indicate like parts throughoutthe center bearing. Fig. 2 is avie'w partly in 3.o ber, and the numeral2 the lower member of so secured to an underlying' truck bolster.

-o rounds the said hub 3. The upper bearing im G that directlyunderliesthe said.v hearing puritan srarnsrnrunr ortica.

' pionnen. Brenna, or CHICAGO, iLLiNois.

ANTIFRICTION CENTER BEARING FOR CARS.

No.y 901,223. Specification of Letters Patent. i Patented Oct. 13, 1908.l Application led June 11, 1906. Serial No. 321,154.

To all whom it may concern: 'i A. Vd-e1? an annular shoulder 9 formedat' the Be it known that l, JOHN C. BARBER, av outer extremityot theconical seat citizen of the United States, residing at C-hi- The lowerbearing member .2, at the outer cago, in the county ot' Cook and Stateof illiu extremity of its. conical bearing surface 6, 6o nois, haveinvented certain new and useful has a slightly'raised, roller engagedstop rib Improvements in Antifriction Center vBear- 10, and the uppermember is provided with ings tor Cars; and l do hereby declare thefollowing to be a full, clear, and exact dea depending annular flange 11that is located script-loiret the invention, such as will enjust outwardof the'trunnions 8, and slightly overlaps said stop rib 10. Thedepending flange 11 is formedv with an inwardly pro. jecting annularretaining rib 12 that directly underlies all of the trunnions 8 of therollers 7. This retaining rib 12 is provided y with anentrance notch 13(see Fig. 1) that 70 is of such size that it will permit the trani;nions S of the rollers to be passed laterally therethrough. Thisentrance passage 13 is normally -closed by a lockpiny or stud 14` thatis driven or screwed through the depending flange 11 (see Figs. 1 and2). The retaining rib 12 and the lock pin 14 lie in the same horizontalplane and, when said pin is in working position, itis impossible toremove the` rollers 7 from working posi- 80 tion with respect to thebearing member 1, vinasmuch as thetrunnions 8 are supported by theretaining llange 12, and the inner ends .of said rollers are supportedby the groove in the depending sleeve portion 4. When the lock pin'14 isremoved, the rollers .maybe moved, oneA at a time, in such positionsthat their studs 8 will aline with and may be passed laterally downwardthrough the notch 13. To prevent the conical rollers from slidingendwise on the conical bearing surfaces 5 and 6, the said rollers areprovided, at their intermediate' portions, with peripheral grooves 15,and the bearing surfaces 5 and 95 6 are provided with annular thrustribs 16 that vengage in the said grooves 15. course, the constructionmight be the reverse. That is, theA rollers might be provided withprojecting peripheral'ribs, and 100 the bearing surfaces 5 and 6 mightbe pro,- vided with cooperating annular grooves. The large ends of therollers .7 also may bear agaiiisttlie so-called retaining llange 12, andto prevent contact between the entire ends of the said rollers, they4are formed with annular concavities 17, immediately surrour'iding`their trunnions 8 and inward of their peripheral portions. Thisconstrucsaid rollers are tion provided for'contact between the flange1'10 .x5 provided with small trunnions 8 which, when 12 and the outerportionsof the large ends Y the rollers are in working positions, lieunl of the-said bearing rollers, and greatly as? pertains to make anduse the same.

My present invention has for its especial object to provide an improvedanti-friction center bearing o'rcars, and to this end it tions ofdevices hereinafter 'described and det'ined in the claim. y

The improved center bearing is illustrated in the accompany-ingdrawings, wherein like several views.

Referring to the drawings, Figure 1 is a plan view, with some partsbrokenaway and some parts sectioned, showing the improved elevation andpartly in vertical section, taken on the line m2 m2 of Fig. 1, and Fig.3 is a section taken on the line w3 :r3 of Fig. 1.

The numeral 1 indicates the upper memthe center bearing, the former ofwhich is adapted to be bolted or otherwise secured to the body bolsterof a car, and the latter of which is adapted to be bolted or otherwiseThe lower member 2 is provided with an upwardly piojectingcentral hub orsleeve portion 3, and the upper member 1 is provided with a dependingsleeve portion 4 that sur-.

member 1 is provided, outward of its sleeve 4, with a conical annularroller bearing surt'aeeo; and the lower member 2 is provided with aconical annular roller bearingsurtace sui-tace .3. The conical bearingsurfaces 5 and 5 flare or diverge lrom'each other in an outwardlydirection. Truncated conical bearing rollers 7 are interposed betweenthe conical bearing surfaces 5 and 6. The small inner ends of the saidrollers lit in annular Agrooves cut on the outer face of the dependingsleeve portion 4 ot the upper member 1. Xt their large outerends,

sisl's in keeping` be rollers in true radial ar ing surfaeeso' said twomembers and inferrangement; that is, Wifll their axes all inlooked withone of said bearing' members but. terseeting the axes of the centerbearing. free to rotaie and travel in respeelV to both l5 The evieeabove described, while simple, of said bearing members, substantiallyas5 strong and durable. is generally eieient for described.

the purposes had in View. In testimony whereof I ax my signature at, IClaim is:. in presence of two witnesses. The combination with upper andlower I BA members of a center bearing, Said members l JO C d 'Lloba-ving teleseopingl hub flanges and eoneenf Witnesses:

. trie outer roller relalnmg flanges, oi eonlcal j L. W. Hmmm,

rollers interposed between the eonieal bear- E. W. lVmm.

